Improvement in the manner of casting hinges onto their axes



MPETERS, PHOTO-LITHOGRAPHER, WASHINGTON. 3 C.

NTTED STATES PATENT Gimme.

SAMUEL NVILKES, OF DARLESTON, ENGLAND.

IMPROVEMENT IN THE MANNER 0F CASTING HINGE ONTOTHEIR AXES.

Specification forming part of Letters Patent No. 2,043, dated April l0, 1841; antedatcd January 2l, 1840.

T0 all whom it may concern:

Be it known that I, SAMUEL WILKEs, a'sub ject of the Queen of Great Britain, and now residing at Darleston` in the county of Stafford, within the said Kingdom, iron-founder, have invented or discovered certain new and useful Improvements in the Manufacture of' Hinges; and I, the said SAMUEL WILKEs, do hereby declare that the nature of my said invention and the manner in which the same is to be performed are fully described and ascertained in and by the following statement thereof, reference being had to the drawings hereunto annexed, and to the gures and letters marked thereon-'- that is to say:

My invention relates to a mode of' manufacturing hinges by casting the two sides or iaps and hinge-joint thereto at one time onto a suit. able axis; and in order to give the best information in my power, I will proceed to describe the drawings hereunto annexed.

In the drawings, Figure l shows a plan or front view of a hinge constructed according to my invention. Fig. 2 is an edge View of Fig. l, and Fig. 3 isan axis having thereon certain washers or plates which keep the parts of the hinge-joint separate and prevent the melted metal running solid. Y

The washers, as shown in the drawings, are thin disks of iron or other metal, and when the hinge is cast these washers remain as parts ofthe hinges; but this is not absolutely necessary, as the disks maybe of hard paper or other suitable material, which, being varnished and dusted over, will act during the time of casting to prevent the melted metal ofthe two flaps or sides running together at the hinge joint, the parts ot' which will thus be kept separate; but I consider it better to use metal disks for the purpose, as shown in Fig. l. The disks b are perforated in the center, and slide tightly onto the axis c, and when set on the axis to a proper gage or distance apart will remain sufficiently secure. rlhe axis and disks thereon are varnished and dusted over with fine burned clay, and are then in a proper state to be put into the mold to receive the melted metal of which the hinge is to be made, which is to be run thereon in order to produce the two iiaps or sides. and the hingejoints thereto.

Having thus described the nat-ure of the hinge produced according to my invention by by molders and fill it with sand, and, having properly pressed the sand therein, I turn the frame over in order to use the even and smooth face of the sand in the frame, and then proceed to place one or more pattern-hinges on the surface, according to the size of the mold. I have, however, for convenience of description, shown only a small mold in the drawings suitable for casting one Vhinge at a time; but it will be evident to workmen engaged as niolders that several hinges may be cast in the same mold when the mold is sufficiently large. Having pressed the front surface of the hinge into the frame of sand, I place iron filling pieces, or what may be called chills,7 c into each of the open joints of the pattern-hinge, which is pressed into the surface of sand in the frame, as above stated. I then place an empty frame onto the first, above explained, and fill in sand and properly press it down in order to produce a proper half-mold, as is well nnderstood by molders'; and having filled the npper frame, I place a board thereon and turn the two frames over and then remove the first frame of' sand from the lower frame of sand, which will leave the hinge in the second frame of sand with the front of the hinge upward. I then place an empty frame onto the second frame, and fill it in with sand, in order to take an impression from the half-.mold which has the pattern-hinge therein, and, having filled and properly pressed in the sand, as is well understood by moldcrs, I remove the last frame of sand, by which a lialfmold, No. 2, is produced ready for use. I then again place the first or what is technically called the odd side mold,77 onto theone containing the pattern-hinge, and place aboard on the upper surface and turn the two frames over and remove the upper frame, and thus is produced the halfmold No. 1 ready for use, having the lling-pieces or chills projecting in their proper places for producing the hollow joints a, as is shown in the half-mold No. 1 of the drawings. I would, however, remark that in such cases where the open joints are large, and will allow of there being sufficient sand to hold together d l?, No. l and No. 2, show the duets, or what me sometimes by melders called ridges by which the melted metal of which the hinge is to be east is to be run into the mold, the mold being placed in :L shnntving direction.

Having thus described the nature of my in- Yention and Jche nmnnel- O11' pei-forming the sinne, I would have itf understood that what I claim iS The inode of nmnui'neturing hinges by Gasfing bhe two flaps or sides with their hingejoints at one time onto a suitable axis, :is above described.

SAM U EL VIIJK'JCS. Witnesses:

JOHN Giens, J. D. GOODMAN,

Both acco'untcmts, .M1'minghmm 

